JPH04164621A - Injection molding device - Google Patents
Injection molding deviceInfo
- Publication number
- JPH04164621A JPH04164621A JP29125090A JP29125090A JPH04164621A JP H04164621 A JPH04164621 A JP H04164621A JP 29125090 A JP29125090 A JP 29125090A JP 29125090 A JP29125090 A JP 29125090A JP H04164621 A JPH04164621 A JP H04164621A
- Authority
- JP
- Japan
- Prior art keywords
- injection cylinder
- hopper
- air
- injection
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 239000012768 molten material Substances 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本考案は射出成形装置の構造に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to the structure of an injection molding device.
［従来の技術］
射出成形において材料中の空気は、成形品に対し気泡の
発生などとして品質１歩留まりに大きな影響を及ぼす為
、極力少なくする必要がある。[Prior Art] Air in the material in injection molding has a large effect on the quality and yield of the molded product, such as the generation of air bubbles, so it is necessary to minimize the amount of air contained in the material.
従来の技術では、ホッパーからスクリューへの材料供給
の際、材料と共に空気が混入されていた。その空気は射
出シリンダー内のスクリューにより材料と分離されホッ
パーへと戻されていた。In conventional technology, air is mixed in with the material when the material is fed from the hopper to the screw. The air was separated from the material by a screw in the injection cylinder and returned to the hopper.
［発明が解決しようとする課題］
しかし従来の方法では、−度射出シリンダー内に混入し
溶融材料中に混じった空気を完全に除去することは技術
的に困難である。また溶融材料中の空気を除去しようと
する為には、成形サイクルタイムが長くなり、生産性の
悪化となる。[Problems to be Solved by the Invention] However, in the conventional method, it is technically difficult to completely remove air that has entered the injection cylinder and mixed into the molten material. Furthermore, in order to remove air from the molten material, the molding cycle time becomes longer, resulting in deterioration of productivity.
そこで本考案では（宿敵材料からの空気の除去を行うこ
とを必要とせず、なお且つ成形サイクルタイムを変化さ
せずに射出成形を行うことを目的にしたものである。Therefore, the present invention aims to perform injection molding without requiring the removal of air from the enemy material and without changing the molding cycle time.
［課題を解決するための手段］
本考案では材料供給部のホッパー及び射出シリンダーに
真空ポンプなどの気体を除去できる装置を接続し、ホッ
パー内及び射出シリンダーの真空化により、材料供給の
際に空気の混入を防止することを特徴とする。[Means for solving the problem] In the present invention, a device capable of removing gas such as a vacuum pump is connected to the hopper and injection cylinder of the material supply section, and by evacuating the inside of the hopper and the injection cylinder, air is removed during material supply. It is characterized by preventing the contamination of
［作 用］
第１図に示すように射出シリンダー内には１−５スクリ
ユーがあり、このスクリューの溝に材料が供給され溶解
される。[Function] As shown in Fig. 1, there is a 1-5 screw in the injection cylinder, and material is supplied to the groove of this screw and melted.
１−４射出シリンダー内の先端部には１−８溶融材料が
ありまたは後端部には１−９０リングなどのシールが施
されている。これにより１−４射出シリンダー内への空
気の進入経路は１−６ホツパーからに限られる６
１−４射出シリンダー内の空気は１−４射出シリンダー
に接続された１−１真空ポンプにより除去される。続い
て１−６のホッパー内の空気が除去される。これにより
、ｌ−６ホツパー内と１−４射出シリンダー内が真空化
され、材料供給の際に１−６ホツパーから１−４射出シ
リンダーへの空気の混入を防止できる。There is a 1-8 molten material at the front end within the 1-4 injection cylinder or a seal such as a 1-90 ring at the rear end. As a result, the path for air to enter the 1-4 injection cylinder is limited to the 1-6 hopper.6 The air inside the 1-4 injection cylinder is removed by the 1-1 vacuum pump connected to the 1-4 injection cylinder. Ru. Subsequently, the air in hoppers 1-6 is removed. As a result, the inside of the 1-6 hopper and the 1-4 injection cylinder are evacuated, and it is possible to prevent air from entering the 1-4 injection cylinder from the 1-6 hopper during material supply.
［実 施 例１］
以下に本考案の実施例を説明する。第１図は射出成形装
置の射出部を示したものである。空気除去用の１−１真
空ポンプは１−２フイルターを介して１−３接続管によ
り１−４射出シリンダーに接続されている。１−１真空
ポンプは常に動作して１４射出シリンダー内の空気を除
去している。１−６ホ・ンノ＼−内の空気は粒状の１−
７材料の間を通過して１−１真空ポンプへと導かれる。[Example 1] An example of the present invention will be described below. FIG. 1 shows an injection section of an injection molding apparatus. A vacuum pump 1-1 for air removal is connected to an injection cylinder 1-4 by a connecting pipe 1-3 via a filter 1-2. The 1-1 vacuum pump is constantly operating to remove air within the 14 injection cylinder. The air inside 1-6 Ho Nno\- is granular 1-
It passes between 7 materials and is led to the 1-1 vacuum pump.
これによりｌ−６ホ・ジノ＜−内の真空化が完了する。This completes the vacuuming of l-6 Ho-Jino<-.
この状態で計量、溶解されたｌ−８ｇ融材料は、材料供
給部からの空気の混入が無い、これにより、成形品の気
泡による外観不良などが低減できる。The 1-8 g melted material weighed and melted in this state does not contain air from the material supply section, thereby reducing defects in the appearance of the molded product due to air bubbles.
また、１−７材料の計量、溶解の際に脱ガスを目的とし
た１−５スクリユーの低回転化も不要となり成形サイク
ルの短縮が可能となり生産性の向上もできる。Further, it is not necessary to lower the rotation speed of the 1-5 screw for the purpose of degassing when measuring and melting the 1-7 material, making it possible to shorten the molding cycle and improve productivity.
１−７材料は１−４射出シリンダーの内径と１−５スク
リユーの外径の隙間を通過できない為１−５スクリユー
の溝に残る。これは１−６ホ・ンバー内及び１−４射出
シリンダー内の真空化とともに１−７材料の１−４射出
シリンダー内への供給の促進にもなる。Since the material 1-7 cannot pass through the gap between the inner diameter of the 1-4 injection cylinder and the outer diameter of the 1-5 screw, it remains in the groove of the 1-5 screw. This also facilitates the supply of the 1-7 material into the 1-4 injection cylinder as well as evacuating the 1-6 chamber and the 1-4 injection cylinder.
１−４射出シリンダーと１−５スクリユーの隙間を通過
した細かい材料は１−２フイルターにより除去される。Fine material passing through the gap between the injection cylinder 1-4 and the screw 1-5 is removed by the filter 1-2.
ｌ−５スクリユー先端及び中間部の１−８材料は、溶融
状態にあり粘性が高いために１−１真空ポンプに引かれ
て逆流することはない。The 1-8 material at the tip of the 1-5 screw and the intermediate portion is in a molten state and has high viscosity, so it will not flow backwards when it is pulled by the 1-1 vacuum pump.
１−６ホツパーへの材料供給の際には１−１０フタを取
り行う、このとき真空が破壊されるが１−１真空ポンプ
の働きにより再び真空となる。真空状態は１−１１ゲー
ジにより確認可能である。When supplying material to the 1-6 hopper, the 1-10 lid is removed. At this time, the vacuum is broken, but the vacuum is restored by the action of the 1-1 vacuum pump. The vacuum state can be confirmed using a 1-11 gauge.
１−６ホツパー内と１−４射出シリンダー内の空気を除
去できる場所であれば、１−６ホツパーから直接１−１
真空ポンプを接続することも可能である。If the air in the 1-6 hopper and 1-4 injection cylinder can be removed, 1-1 can be directly removed from the 1-6 hopper.
It is also possible to connect a vacuum pump.
［実 施 例２］
第２図は材料供給部に自動材料供給装置が接続された場
合を示す。[Embodiment 2] FIG. 2 shows a case where an automatic material supply device is connected to the material supply section.
通常２−１０バルブは全閉、２−９バルブＢは部間の状
態である。２−１真空ポンプは常に動作状態にあり２−
２フイルターを介し２−３接続管により２−１１ホツパ
ー１と２−６ホツパー２の空気を除去している。Normally, the 2-10 valve is fully closed, and the 2-9 valve B is in an intermediate state. 2-1 The vacuum pump is always in operation 2-
The air in the 2-11 hopper 1 and the 2-6 hopper 2 is removed by the 2-3 connecting pipe through the 2-filter.
２−６ホツパー２の材料が少な（なると自動材料供給装
置により材料が２−１１ホツパー１に供給される。この
とき２−９バルブＢは全開、２−１０バルブＡは全開と
なる。この状態において２−６ホツパー２の真空化は保
たれる。When the material in the 2-6 hopper 2 is low (when the material is supplied to the 2-11 hopper 1 by the automatic material feeding device), the 2-9 valve B is fully open and the 2-10 valve A is fully open. This state In this case, the vacuum of the 2-6 hopper 2 is maintained.
２−１１ホツパー１に材料が一定量供給されると材料の
供給は停止し、２−１−バルブＡが全開となる。When a certain amount of material is supplied to the 2-11 hopper 1, the supply of material is stopped and the 2-1-valve A is fully opened.
２−１１ホツパー１の真空化が完了すると２−９バルブ
Ｂが全開となり２−６ホツパー２への材料が供給される
。When the 2-11 hopper 1 is completely evacuated, the 2-9 valve B is fully opened and material is supplied to the 2-6 hopper 2.
この時２−６ホツパーと２−４射出シリンダーは真空状
態である。この状態で２−７材料は計量、溶融されるた
め２−８溶融材料中に空気を含まない。これにより成形
品の気泡による外観不良などの不良が低減できる。At this time, the hopper 2-6 and the injection cylinder 2-4 are in a vacuum state. Since the material 2-7 is measured and melted in this state, the molten material 2-8 does not contain air. This can reduce defects such as poor appearance due to air bubbles in the molded product.
ホッパー内の２−７材料は２−１２遮蔽板によりホッパ
ー内に残され、空気のみが２−１真空ポンプに導かれる
。 ２−１２遮蔽板を通過した細かい材料は２−２フイ
ルターにより除去される。The 2-7 material in the hopper is left in the hopper by the 2-12 shield and only air is directed to the 2-1 vacuum pump. The fine material passing through the 2-12 shielding plate is removed by the 2-2 filter.
第１図は、本発明の実施例である射出成形装置の射出部
の構成図である６
第２図は、本発明の他の実施例である自動材料供給装置
付きの射出成形装置の射出部の構成図である。
１−１・・・真空ポンプ
１−２・ ・フィルター
１−３・・・接続管
１−４ ・・射出シリンダー
１−５・・・スクリュー
１−６・ ・ホッパー
１−７ ・・材料
１−８・・・溶融材ね
１−９・・・Ｏリング
１−１０・・フタ
１−１１・・ゲージ
２−１・・・真空ポンプ
２−２・・・フィルター
２−３・・・接続管
２−４・ ・射出シリンダー
２−５・・・スクリュー
２−６・・・ホッパー２
２−７・・・材料
２−８・・・溶融材料
２−９・・・バルブＢ
２−１０・・バルブＡ
２−１１・・ホッパー１
２−１２・・遮蔽板
２−１３・・０リング
２−１４・・ゲージ
以上
出願人 セイコーエプソン株式会社
代理人 弁理士 鈴 木 喜三部（化１名）第２図FIG. 1 is a block diagram of an injection section of an injection molding apparatus according to an embodiment of the present invention.6 FIG. FIG. 1-1... Vacuum pump 1-2... Filter 1-3... Connecting pipe 1-4... Injection cylinder 1-5... Screw 1-6... Hopper 1-7... Material 1- 8... Melt material 1-9... O-ring 1-10... Lid 1-11... Gauge 2-1... Vacuum pump 2-2... Filter 2-3... Connection pipe 2-4. Injection cylinder 2-5...Screw 2-6...Hopper 2 2-7...Material 2-8...Melted material 2-9...Valve B 2-10... Valve A 2-11... Hopper 1 2-12... Shielding plate 2-13... 0 ring 2-14... Gauge or higher Applicant: Seiko Epson Co., Ltd. Representative Patent attorney Kizobe Suzuki (1 person) Figure 2
Claims (1)
に真空化することにより、空気の混入を防止し成形品の
品質と生産性を向上させることを特徴とする射出成形装
置。An injection molding device characterized by forcibly creating a vacuum inside the material supply section and injection cylinder of the injection molding device to prevent air from entering the device and improve the quality and productivity of molded products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29125090A JPH04164621A (en) | 1990-10-29 | 1990-10-29 | Injection molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29125090A JPH04164621A (en) | 1990-10-29 | 1990-10-29 | Injection molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04164621A true JPH04164621A (en) | 1992-06-10 |
Family
ID=17766432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29125090A Pending JPH04164621A (en) | 1990-10-29 | 1990-10-29 | Injection molding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04164621A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100499881B1 (en) * | 2002-06-25 | 2005-07-18 | 주식회사 신흥정밀 | Injection molding machine material supply system and method that is consisted of single vacuum inhaler |
| JP2006035846A (en) * | 2004-06-21 | 2006-02-09 | Mamada Sangyo:Kk | Injection molding machine and resin material supply method using it |
| KR100688682B1 (en) * | 2001-06-13 | 2007-02-28 | 에스케이 주식회사 | Apparatus for Connecting Extruding Process with Ventilating System and Ventilating Method Using the Same |
| CN106003575A (en) * | 2016-06-29 | 2016-10-12 | 苏州天朋精密元器件有限公司 | Automatic loading device for injection mold |
-
1990
- 1990-10-29 JP JP29125090A patent/JPH04164621A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100688682B1 (en) * | 2001-06-13 | 2007-02-28 | 에스케이 주식회사 | Apparatus for Connecting Extruding Process with Ventilating System and Ventilating Method Using the Same |
| KR100499881B1 (en) * | 2002-06-25 | 2005-07-18 | 주식회사 신흥정밀 | Injection molding machine material supply system and method that is consisted of single vacuum inhaler |
| JP2006035846A (en) * | 2004-06-21 | 2006-02-09 | Mamada Sangyo:Kk | Injection molding machine and resin material supply method using it |
| CN106003575A (en) * | 2016-06-29 | 2016-10-12 | 苏州天朋精密元器件有限公司 | Automatic loading device for injection mold |
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